US7559574B2 - Gas bag module for a vehicle occupant restraint device - Google Patents

Gas bag module for a vehicle occupant restraint device Download PDF

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Publication number
US7559574B2
US7559574B2 US11/191,569 US19156905A US7559574B2 US 7559574 B2 US7559574 B2 US 7559574B2 US 19156905 A US19156905 A US 19156905A US 7559574 B2 US7559574 B2 US 7559574B2
Authority
US
United States
Prior art keywords
gas
gas bag
generator
bag module
conduit device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US11/191,569
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English (en)
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US20060028008A1 (en
Inventor
Marcus Magoley
Michael Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Automotive Safety Systems Germany GmbH
Original Assignee
TRW Automotive Safety Systems GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Assigned to TRW AUTOMOTIVE SAFETY SYSTEMS GMBH reassignment TRW AUTOMOTIVE SAFETY SYSTEMS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MAGOLEY, DR. MARCUS, SCHNEIDER, DR. MICHAEL
Publication of US20060028008A1 publication Critical patent/US20060028008A1/en
Application granted granted Critical
Publication of US7559574B2 publication Critical patent/US7559574B2/en
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/261—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/276—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means to vent the inflation fluid source, e.g. in case of overpressure

Definitions

  • the invention relates to a gas bag module for a vehicle occupant restraint device.
  • a gas bag is to be filled as quickly as possible with the gas generated by the gas generator. Under particular circumstances, however, it is desirable that the gas bag is not filled with the entire volume of gas which is made available. For such cases, outflow openings can be provided in the gas bag module. By freeing the outflow openings, the pressure in the gas bag can be limited.
  • a gas bag module is known from published U.S. patent application US 2004/0051286 A1, for example.
  • U.S. Pat. No. 6,183,007 shows a gas generator with a diffusor which has several outflow openings giving the emerging gas different flow directions in order to ensure a uniform filling of the gas bag.
  • the gas bag module for a vehicle occupant restraint device comprises a gas generator for filling a gas bag, and a gas conduit device arranged inside the module which forces a predetermined, uniform flow direction on at least a portion of the gas emerging out from the gas generator.
  • the invention is based on the knowledge that a laminar flow of the gas has a positive effect on the heat resistance of the adjoining components of the gas bag module compared with a turbulent flow.
  • the gas conduit device according to the invention provides the preconditions for such a form of flow.
  • the gas conduit device makes provision in addition that the gas also shows a desired behaviour as regards flow direction and flow type in the further flow path.
  • a gas bag module according to the invention having an outflow opening which is able to be freed to enable gas to flow off out from the gas bag module, the gas conduit device being designed so that it directs at least a portion of the gas which has emerged from the gas generator to the outflow opening. Therefore, with a freeing of the outflow opening, the gas can be conveyed out from the gas bag module in a controlled manner via the path course provided by the gas conduit device.
  • FIG. 1 shows diagrammatically a lateral sectional view of a gas bag module according to a first embodiment of the invention
  • FIG. 2 shows diagrammatically a top view partially in section onto a gas bag module according to a second embodiment of the invention
  • FIG. 3 shows diagrammatically a lateral sectional view along the line III-III in FIG. 2 ;
  • FIG. 4 shows diagrammatically a top view in section onto a gas bag module according to a third embodiment of the invention
  • FIG. 5 shows diagrammatically a top view partially in section onto a gas bag module according to a fourth embodiment of the invention
  • FIG. 6 shows diagrammatically a top view partially in section onto a part of a gas bag module according to a fifth embodiment of the invention
  • FIG. 7 shows diagrammatically a top view partially in section onto a part of a gas bag module according to a sixth embodiment of the invention.
  • FIG. 8 shows diagrammatically a lateral sectional view along the line VIII-VIII in FIG. 7 .
  • FIG. 1 a gas bag module 10 with a gas bag 16 and a gas generator 14 fastened on a generator carrier 12 is illustrated diagrammatically.
  • the gas bag 16 is clamped between a gas bag holding plate 18 and the generator carrier 12 .
  • a discharge opening 20 is provided, which can be freed as required, in order to make possible an outflow of gas.
  • the gas generator 14 is surrounded by a cage 22 which in the illustrated example embodiment is constructed in one piece with the gas bag holding plate 18 .
  • the cage 22 has a gas conduit device in the form of a channel 24 which leads to the discharge opening 20 .
  • a predetermined, uniform flow direction is forced by the channel 24 onto the gas generated by the gas generator 14 , which emerges radially out from the outflow openings 26 .
  • the channel 24 deliberately directs the gas to the discharge opening 20 and provides for a substantially laminar flow of the gas. As long as the discharge opening 20 is freed, a portion of the gas generated by the gas generator 14 can emerge out from the module 10 . This portion of the gas does not contribute to the filling of the gas bag 16 . As long as the discharge opening 20 is closed, the gas flows substantially in a laminar manner into the gas bag 16 .
  • the gas conduit device of the embodiment illustrated in FIGS. 2 and 3 is constructed in two parts.
  • the cage 22 surrounding the gas generator 14 is open to one side, which faces the discharge opening 20 .
  • a separate baffle plate 28 is arranged which directs a portion of the gas emerging out from the opening of the cage 22 specifically onto the discharge opening 20 .
  • FIG. 4 shows an embodiment in which two specially formed baffle plates 30 and 32 are provided, in order to give the gas which has emerged from the gas generator 14 the desired direction of flow and to make possible as laminar a flow as possible.
  • FIG. 5 A similar embodiment is shown in FIG. 5 , in which the gas is given a different flow direction through the gas conduit device.
  • baffle plates 34 are arranged respectively between two outflow openings 26 of the gas generator 14 .
  • the baffle plates 34 force the gas, emerging radially out from the outlet openings 26 , into a uniform flow direction (clockwise) with as largely as possible a laminar flow path.
  • FIGS. 7 and 8 The embodiment shown in FIGS. 7 and 8 is similar to the embodiment of FIG. 6 . In order to achieve the desired gas flow, however, no separate baffle plates are provided here. Rather, specially constructed outlet channels 36 are provided on the gas generator 14 itself, which give the emerging gas a predetermined, uniform direction. The outflow channels 36 can be part of a diffusor of the gas generator 14 .
  • the arrangement, number and size of the outflow openings of the gas generator and/or of the cage can also contribute to the desired flow behaviour.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
US11/191,569 2004-08-05 2005-07-28 Gas bag module for a vehicle occupant restraint device Expired - Fee Related US7559574B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004012303U DE202004012303U1 (de) 2004-08-05 2004-08-05 Gassackmodul für eine Fahrzeuginsassen-Rückhaltevorrichtung
DE202004012303.7 2004-08-05

Publications (2)

Publication Number Publication Date
US20060028008A1 US20060028008A1 (en) 2006-02-09
US7559574B2 true US7559574B2 (en) 2009-07-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/191,569 Expired - Fee Related US7559574B2 (en) 2004-08-05 2005-07-28 Gas bag module for a vehicle occupant restraint device

Country Status (4)

Country Link
US (1) US7559574B2 (de)
EP (1) EP1623889B1 (de)
DE (2) DE202004012303U1 (de)
ES (1) ES2314526T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7823920B1 (en) * 2009-06-16 2010-11-02 Trw Vehicle Safety Systems Inc. Inflatable vehicle occupant protection device with inflation fluid deflector
US9440614B2 (en) * 2015-01-30 2016-09-13 Autoliv Asp, Inc. Airbag module assembly with cross-car gas diffusion

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8168133B2 (en) * 2005-05-09 2012-05-01 Wisconsin Alumni Research Foundation Device for performing a high throughput assay
US7497468B2 (en) * 2005-05-12 2009-03-03 Autoliv Asp, Inc. Airbag inflation deflection module
US20080007035A1 (en) * 2006-06-26 2008-01-10 Trw Automotive Gmbh Airbag module
US7874575B2 (en) * 2007-08-10 2011-01-25 Toyoda Gosei Co., Ltd. Airbag apparatus
DE102015015451B4 (de) * 2015-12-02 2019-03-07 Trw Automotive Safety Systems Gmbh Diffusor für ein Gassackmodul mit in Umfangsrichtung unterschiedlich orientierten Durchströmöffnungen

Citations (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618980A (en) 1969-10-31 1971-11-09 Chrysler Corp Trap for nongaseous matter
US4178017A (en) 1974-11-20 1979-12-11 Nissan Motor Company, Limited Safety bag inflation apparatus with extendible guard member against contact of bag with heated gas generator
US5129674A (en) 1990-11-27 1992-07-14 Trw Vehicle Safety Systems Inc. Reaction device for air bag module
US5509686A (en) * 1992-05-04 1996-04-23 General Motors Corporation Inflatable restraint system with gas augmentation
DE19806773A1 (de) 1997-02-28 1998-09-03 Volkswagen Ag Airbageinrichtung
US5860672A (en) * 1996-11-25 1999-01-19 Morton International, Inc. Airbag baffle mount
DE19731220A1 (de) 1997-07-21 1999-01-28 Temic Bayern Chem Airbag Gmbh Gasgenerator
DE29903233U1 (de) 1999-02-23 1999-07-08 Voss, Dieter, 59557 Lippstadt Halbzeug für Auswerferhülsen für Spritz- und Druckgußwerkzeuge
US6039347A (en) * 1997-02-03 2000-03-21 General Dynamics Armament Systems, Inc. Liquid propellant airbag inflator with dual telescoping pistons
US6082765A (en) * 1998-11-10 2000-07-04 Trw Vehicle Safety Systems Inc. Air bag module with fluid venting
US6183007B1 (en) 1998-12-15 2001-02-06 Trw Vehicle Safety Systems Inc. Thrust-neutral inflator manifold
DE29917943U1 (de) 1999-10-12 2001-02-22 Trw Repa Gmbh Beifahrer-Gassack-Rückhaltesystem
US20010045734A1 (en) * 1999-10-13 2001-11-29 Alex Scott Damman Air bag module with variable inflation.
DE20200365U1 (de) 2002-01-04 2002-07-25 Takata Petri Gmbh Ulm Gasstromverteiler für ein Seitenairbagmodul
US6471239B1 (en) * 1999-09-30 2002-10-29 Nihon Plast Co., Ltd. Air bag device
US20030025309A1 (en) * 2001-07-14 2003-02-06 Schenck Michael A. Active venting of an airbag module
EP1288083A2 (de) 2001-08-31 2003-03-05 Adam Opel Ag Beifahrer-Airbag-Modul für ein Kraftfahrzeug
DE10142598A1 (de) 2001-08-31 2003-04-10 Opel Adam Ag Beifahrer-Airbag-Modul für eine Armaturentafel eines Kraftfahrzeugs
WO2003047917A2 (de) 2001-12-03 2003-06-12 Inova Gmbh Airbag vorrichtung und betriebsverfahren dafür
US20030107207A1 (en) * 2001-10-12 2003-06-12 Trw Inc. Air bag module with vent cover
US6592141B1 (en) * 1998-12-18 2003-07-15 Delphi Technologies, Inc. Airbag module for motor vehicles
US20030173761A1 (en) * 2002-03-18 2003-09-18 Rink Karl K. Inflatable surface including a plurality of nozzles
DE20310575U1 (de) 2003-07-04 2003-10-09 TAKATA-PETRI AG, 63743 Aschaffenburg Aufblaseinrichtung zum Aufblasen eines Gassackes
US20030189326A1 (en) * 2002-04-05 2003-10-09 Short Chris John Air bag inflator gas venting system
US20030197357A1 (en) * 2002-04-22 2003-10-23 Trw Occupant Restraint Systems Gmbh & Co. Kg Gas bag module
US20040051286A1 (en) 2002-09-16 2004-03-18 Trw Vehicle Safety Systems Inc. Air bag module vent with releasable latch
US20040108691A1 (en) 2001-06-06 2004-06-10 Peter Dahmen Housing for an airbag module
US6776434B2 (en) * 2001-11-06 2004-08-17 Key Safety Systems, Inc. Driver side airbag with a baffle
US20050029784A1 (en) 2002-01-04 2005-02-10 Wolfgang Siegel Gas flow distributor for a lateral airbag module
US20050073139A1 (en) * 2003-10-06 2005-04-07 Trw Vehicle Safety Systems Inc. Inflatable vehicle occupant protection device with inflation fluid deflector
US20050212274A1 (en) * 2004-02-19 2005-09-29 Autoliv Development Ab Air-bag module with floating gas generator diffuser
US7083191B2 (en) * 2002-09-16 2006-08-01 Trw Vehicle Safety Systems Inc. Air bag module with vent controlled by tether
US20060226642A1 (en) * 2005-04-07 2006-10-12 Trw Automotive Safety Systems Gmbh Vehicle occupant restraint device
US20060255578A1 (en) * 2005-05-12 2006-11-16 Choi Changsoo Airbag inflation deflection module

Patent Citations (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618980A (en) 1969-10-31 1971-11-09 Chrysler Corp Trap for nongaseous matter
US4178017A (en) 1974-11-20 1979-12-11 Nissan Motor Company, Limited Safety bag inflation apparatus with extendible guard member against contact of bag with heated gas generator
US5129674A (en) 1990-11-27 1992-07-14 Trw Vehicle Safety Systems Inc. Reaction device for air bag module
US5509686A (en) * 1992-05-04 1996-04-23 General Motors Corporation Inflatable restraint system with gas augmentation
US5860672A (en) * 1996-11-25 1999-01-19 Morton International, Inc. Airbag baffle mount
US6039347A (en) * 1997-02-03 2000-03-21 General Dynamics Armament Systems, Inc. Liquid propellant airbag inflator with dual telescoping pistons
DE19806773A1 (de) 1997-02-28 1998-09-03 Volkswagen Ag Airbageinrichtung
DE19731220A1 (de) 1997-07-21 1999-01-28 Temic Bayern Chem Airbag Gmbh Gasgenerator
US6082765A (en) * 1998-11-10 2000-07-04 Trw Vehicle Safety Systems Inc. Air bag module with fluid venting
US6183007B1 (en) 1998-12-15 2001-02-06 Trw Vehicle Safety Systems Inc. Thrust-neutral inflator manifold
US6592141B1 (en) * 1998-12-18 2003-07-15 Delphi Technologies, Inc. Airbag module for motor vehicles
DE29903233U1 (de) 1999-02-23 1999-07-08 Voss, Dieter, 59557 Lippstadt Halbzeug für Auswerferhülsen für Spritz- und Druckgußwerkzeuge
US6471239B1 (en) * 1999-09-30 2002-10-29 Nihon Plast Co., Ltd. Air bag device
DE29917943U1 (de) 1999-10-12 2001-02-22 Trw Repa Gmbh Beifahrer-Gassack-Rückhaltesystem
US20010045734A1 (en) * 1999-10-13 2001-11-29 Alex Scott Damman Air bag module with variable inflation.
US20040108691A1 (en) 2001-06-06 2004-06-10 Peter Dahmen Housing for an airbag module
US20030025309A1 (en) * 2001-07-14 2003-02-06 Schenck Michael A. Active venting of an airbag module
EP1288083A2 (de) 2001-08-31 2003-03-05 Adam Opel Ag Beifahrer-Airbag-Modul für ein Kraftfahrzeug
DE10142598A1 (de) 2001-08-31 2003-04-10 Opel Adam Ag Beifahrer-Airbag-Modul für eine Armaturentafel eines Kraftfahrzeugs
US20030107207A1 (en) * 2001-10-12 2003-06-12 Trw Inc. Air bag module with vent cover
US6776434B2 (en) * 2001-11-06 2004-08-17 Key Safety Systems, Inc. Driver side airbag with a baffle
WO2003047917A2 (de) 2001-12-03 2003-06-12 Inova Gmbh Airbag vorrichtung und betriebsverfahren dafür
DE20200365U1 (de) 2002-01-04 2002-07-25 Takata Petri Gmbh Ulm Gasstromverteiler für ein Seitenairbagmodul
US20050029784A1 (en) 2002-01-04 2005-02-10 Wolfgang Siegel Gas flow distributor for a lateral airbag module
US20030173761A1 (en) * 2002-03-18 2003-09-18 Rink Karl K. Inflatable surface including a plurality of nozzles
US20030189326A1 (en) * 2002-04-05 2003-10-09 Short Chris John Air bag inflator gas venting system
US20030197357A1 (en) * 2002-04-22 2003-10-23 Trw Occupant Restraint Systems Gmbh & Co. Kg Gas bag module
US7083191B2 (en) * 2002-09-16 2006-08-01 Trw Vehicle Safety Systems Inc. Air bag module with vent controlled by tether
US20040051286A1 (en) 2002-09-16 2004-03-18 Trw Vehicle Safety Systems Inc. Air bag module vent with releasable latch
DE20310575U1 (de) 2003-07-04 2003-10-09 TAKATA-PETRI AG, 63743 Aschaffenburg Aufblaseinrichtung zum Aufblasen eines Gassackes
US20050073139A1 (en) * 2003-10-06 2005-04-07 Trw Vehicle Safety Systems Inc. Inflatable vehicle occupant protection device with inflation fluid deflector
US20050212274A1 (en) * 2004-02-19 2005-09-29 Autoliv Development Ab Air-bag module with floating gas generator diffuser
US20060226642A1 (en) * 2005-04-07 2006-10-12 Trw Automotive Safety Systems Gmbh Vehicle occupant restraint device
US20060255578A1 (en) * 2005-05-12 2006-11-16 Choi Changsoo Airbag inflation deflection module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7823920B1 (en) * 2009-06-16 2010-11-02 Trw Vehicle Safety Systems Inc. Inflatable vehicle occupant protection device with inflation fluid deflector
US9440614B2 (en) * 2015-01-30 2016-09-13 Autoliv Asp, Inc. Airbag module assembly with cross-car gas diffusion

Also Published As

Publication number Publication date
EP1623889B1 (de) 2008-10-01
ES2314526T3 (es) 2009-03-16
DE502005005507D1 (de) 2008-11-13
US20060028008A1 (en) 2006-02-09
EP1623889A3 (de) 2006-09-20
EP1623889A2 (de) 2006-02-08
DE202004012303U1 (de) 2004-12-09

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